Paper shade roller and method of forming



July 15 1924.;` 1,501,391

H. c. BRENEMAN PAPER SHADE ROLLER AND METHOD 0F FORMING Filed May s;1921 ,ULI

.allll Patented .luly l5, i924.

isciai HARRY CAMPBELL BRENEMAN, OF CINCINNATI, OHIO, ASSIGNOR TO THECAPITOL SHADE ROLLER COMPANY, 0F CINCINNATI, OHIO, A CORIORATION OFOHIO.

PAPER SHADE ROLLER AND METHOD OF FORMING'.

Application filed May 3,

To all whom t may concer/n: f

Be it known that I, HARRY C. BRENEMAN, a citizen of the United States,and residing at Cincinnati, in the county of Hamilton and State of'Ohio,have invented a new and useful `Improvement in Paper Shade Rollers andMethods 0f Forming, of which the following specification is a fulldisclosure.

My invention relates to a window-shade roller and the process of makingthe same. Such rollers are ordinarily wooden and the object of myinvention is to produce a window shade roller made entirely of paper,which is cheaper and lighter than wood and which at the same time shallhave durability, rigidity, water-resistance surface, and the essentialproperties of a wood roller combined with the desirable characteristicsof a paper structure.

The features of the invention, disclosing the underlying principles ofthe construction and method, are illustrated in the accompanyingdrawings, forming a part of this specification, wherein:

Fig. l is a diagrammatic representation of a sheet of pulp paper, thegrain of the same being represented by dash lines.

Fig. 2 is a similar view showing the edge of the paper inserted within aslotted mandrel, preparatory to rolling.

Fig. 3 is an end view of Fig. 2.

Fig. 4; is an end view of the rolled sheet.

Fig. 5 is an elevation of Fig. 4.

Fig. 6 is a diagram of a drying tray, illustrating the method of placingthe rolled tubes, when drying, to prevent warping.

Fig. 7 represents a finished rolled paper shade roller made according tothe herewithin described method.

The problem encountered, when it was proposed to substitute paper forwood, was to produce a roller of sufficient length for the purpose, say36 inches, which would be entirely straight and cylindrical,sufficiently rigid longitudinally, durable or permanently liXed with asuitable water resistance surface.

The first and essential consideration is to employ a paper which will berelatively flexible in one direction and relatively nonieXible in thetransverse direction and to 'roll the same upon a suitable mandrel transversely in relation to the direction of greater flexibility.

The invention is not limited, t0 the con- 1921. Serial N0. 465,498.

stituency of the paper, but the essence of characteristic indicated,forv instance, will be found in a paper, say, suitable for paperboxes orwall-board, formed of chipboard and pulp, in which` the grain is to agreat extent laid uniformly by the rolls in the direction ofv issue`from the paper machine. It is rolled so that the grain alignment runsparallel to the axis, that is, in the direction in which the paper isrelatively more flexible. This characteristic can best be indicated inFig. 1, wherein the dash lines a indicate the direction of grainalignment cor responding to the direction in which the paper issues fromthe paper mill rollsand the arrow b indicates the direction in which thepaper is rolled on the mandrel to form the shade roller, that is to say,the dash lines a indicate the lay of the grain. Such a paper as iscommercially known as reenforced chipboard will answer the purpose, andas explained, this paper is to be rolled 0n an axis transversely to theline of issue from the machine.

The second step in the process consists in rolling upon a. hollowmandrel,'shown in Fig. 2, preferably formed with a radial slot 2. Theinner margin of the roll is tucked uniformly into this slot, and anadhesive coating is applied to the paper leaving a non-adhesive marginalportion at the initial end of the paper sufficient to allow for thelength of paper to be inserted into a mandrel slot and to roll at leastonce around the mandrel so that the paper will not adhere to themandrel. The paper so laid out, is rolled upon this mandrel for its fulllength with the grain of the paper lengthwise with the axis of themandrel, bringing the edge of the last lap in a straight line with theaxis of the mandrel. The plies are made in rolling or coiling the paper,each arm adhesively secured one to the other, the adhesive rendering thetube when completed in a moist state which is required to be dried.

It has been found that great care must be exercised in drying the tubesor rolls, as they invariably become warped and crooked in drying.

I have discovered that if these rolls are contactually superposed in adry room or on drying trays that they will warp and remain crooked.Therefore, a step of my process consists in supporting these rolls ortubes in horizontal rows vertically Space/d,

from one another. It take about a Weekto properly dry the tubes ifsubjected to a temperature approximately 80o to 90, slow, even drying.The tubes will bend or distort during the process, but I have found thatWhen so separated, they entirely right themse-lves at the end of thedrying period.

One of the great difficulties has been to roll tubes of this lengthentirely true, so that the outer edge of the paper will lie in astraight line. This is accomplished by the slotted mandrel Which enablesone to insert a denite length of the vpaper strip at the beginning ofthe operation, say, half an inch, uniformly throughout its Width.

l-Vhen so dried, the tubes are preferably surfaced with a Waterresistance coating and preferably stained or colored. I haveV found bestfor this purpose the Water solution of a 'selected aniline dye withpreferably sufficient casein to form a saturated solution. Vhen the r'llis so formed, the ferrules 3 are forced on to the opposite ends.

I have found this roll Very durable and permanent. It is both light andrigid and a very great improvement over the ordinary Wood roller.

Having described my invention, I claim:

The herein described process of forming a Window shade roller whichconsists in rolling upon a mandrel a strip of paper With the grainrunning parallel to the axis, inserting a uniform marginal portion ofthe stripV radially into a mandrel roll, adhesively coating the paperstrip except the insert portion and suiiicient to non-adhesively envelopthe mandrel, drying the rolls While supported in horizontal rowsvertically spaced from one another, and nall-y surfacing the dried rollwith a Waterlre'sisting material. A

In Witness whereof, I hereunto .subscribe my name,'as attested by the'two' subscribing Witnesses.

HARRY CAMPBELL BRENEMAN.

Witnesses:

L. A. Bron, FRANCIS E. ALDE.

